Forest Park, IL Weather

Forest Park, IL climate is warm during summer when temperatures tend to be in the 70's and very cold during winter when temperatures tend to be in the 20's.

The warmest month of the year is July with an average maximum temperature of 83.50 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 14.30 degrees Fahrenheit.

Temperature variations between night and day tend to be moderate during summer with a difference that can reach 20 degrees Fahrenheit, and fairly limited during winter with an average difference of 15 degrees Fahrenheit.

The annual average precipitation at Forest Park is 36.27 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is August with an average rainfall of 4.62 Inches.

Weather Data

Current Conditions

(Updated: 10:51 AM CST SUN NOV 8 2009)

Mostly Cloudy, 62°F	Humidity: 73%	Dewpoint: 53°F
	Wind Speed: S 11.5 MPH (10 KT)	Heat Index: 62°F
	Barometer: 30.10 in.	Wind Chill: 61°F

Weather Forecast

(Generated: 3:39 AM CST SUN NOV 08 2009)

	Hi: 70°F	Today: Mostly sunny. Near record breaking warmth likely. Highs around 70. Light and variable winds early in the morning becoming south 10 to 15 mph in the late morning and afternoon.
	Lo: 51°F
	Hi: 65°F	Monday: Mostly cloudy. A 30 percent chance of showers in the afternoon. Highs in the mid 60s. Southwest winds around 10 mph until late afternoon shifting to the north late in the afternoon.
	Lo: 45°F
	Hi: 55°F	Tuesday: Partly sunny with a 30 percent chance of showers in the morning...Then sunny in the afternoon. Highs in the mid 50s. Northeast winds 10 to 15 mph.
	Lo: 35°F
	Hi: 55°F	Veterans day: Sunny. Highs in the mid 50s.
	Lo: 41°F
	Hi: 61°F	Thursday: Partly cloudy. Highs in the lower 60s. Lows in the lower 40s.
	Lo: 41°F
	Hi: 61°F	Friday: Partly cloudy. Highs in the lower 60s. Lows in the lower 40s.
	Lo: 41°F
	Hi: 61°F	Friday: Partly cloudy. Highs in the lower 60s. Lows in the lower 40s.
	Lo: 41°F

Moon, Sunrise and Sunset

	Moon Phase: Waning Gibbous Moon	Civil Twilight: 6:02 AM CST	Sunrise: 6:31 AM CST
		Sunset: 4:37 PM CST	Civil Twilight: 5:07 PM CST

Normal Climate

Normal Temperatures

(CHICAGO OHARE INTL AP Weather station, 8.85 miles from Forest Park)

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Max °F	29.6	34.7	46.1	58.0	69.9	79.2	83.5	81.2	73.9	62.1	47.1	34.4	58.3
Mean °F	22.0	27.0	37.3	47.8	58.7	68.2	73.3	71.7	63.8	52.1	39.3	27.4	49.1
Min °F	14.3	19.2	28.5	37.6	47.5	57.2	63.2	62.2	53.7	42.1	31.6	20.4	39.8

Normal Precipitation